chemistry (molecular calculations)

posted by .

If you had 78.2 grams of K, how much oxygen is needed to convert it all to K2O?

  • chemistry (molecular calculations) -

    78.2g K = 2 moles
    each 2 moles of K reacts with 1 mole of O.

    1 mole O = 16g

  • chemistry (molecular calculations) -

    78

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Chemistry

    Can some please check my answers for the following questions?
  2. chemistry

    What is the coefficient of oxygen in the following equation for the reaction of potassium (K) with oxygen (O2) to form potassium oxide (K2O?
  3. Chemistry

    A few questions...how many grams are in 48.7x10^24?
  4. Chemistry

    Posted by Angeline on Monday, April 20, 2009 at 5:35pm. A few questions...how many grams are in 48.7x10^24?
  5. Chemistry

    Calculate the empirical formula and molecular formula of a compound that contains only carbon, oxygen and hydrogen and has a molecular mass of approximately 90. g/mol. Upon combustion of 12.0g of the compund with an excess of oxygen, …
  6. Chemistry

    A certain compound contains carbon, hydrogen , and oxygen. When 1.00 grams of this compound are burned in oxygen gas 1.47 grams of CO2 and 0.600 grams of water are formed. When 2.75 grams of the compound are dissolved in 10.0 grams …
  7. Molecular calculations (chemistry)

    If you had 19 grams of F, how much Ca would you need to convert all of the F to CaF2?
  8. chemistry (molecular calculations)

    If you had 106.35 grams of Cl, how much Na would be required to convert i all to NaCl. I worked this problem and got 41.83 grams of Na, but I'm not sure if this is correct.
  9. Molecular Calculations

    if you had 118.7 gm of Sn; how many grams of oxygen would need to convert al the Sn into SnO^2
  10. Chemistry

    Nitrogen can also be produced from sodium metal and potassium nitrate by the reaction: Na(s) +KNO3 (s) --> K2O(s) +Na2O(s) + N2(g) If we generate oxygen by the thermal decomposition of potassium chlorate: 2KClO3(s) --> 2KCl(s) …

More Similar Questions